Pump having standing-valve puller



Jan. 1 1927. 1614 771 .1. c. AXELSON ET AL PU"? HAVING STANDING VALVEFULLER Filed August 13. 192: z Sheets-Shut 1 3/ I 52 'C/ULE 67311124501.

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PUIP HAVING STANDING VALVE FULLER Filed August 13. 1923 2 Shanta-Shoot 2jvzyrrazs:

ATTORNE YA! Patented Jan. 18, 1927.

UNITED STATES PATENT OFFICE.

JULE o. AXELSON ND WIL IELM J nnr OF .os NenLns, CALIFORNI ssIGNons T0AxELsoN MACHINE co, A CORPORATION or CALIFORNIA.

PUMP HAVING STANDING-VALVE FULLER.

Application filed August 13, 1923.

Our invention relates to the art of pumping oil wells and isparticularly applicable to the pimiping of deep wells.

It is common practice in the art to provide an oil well pump barrelwhich is usually placed at or near the bottom of a string of tubingwhich is suspended in the casing of the well. This barrel contains aplunger which fits tightly therein and which has an openingtherethrough, the opening being closed on the up stroke of the plungerby a working valve. There is also provided a standing valve carried in astanding valve cage seated in the bottom of the barrel, this valveclosing on the down stroke of the plunger, thus holding any oil whichmay have been drawn therethrough during the up stroke of the plunger.

It is often necessary to pull the plunger from the well by means of thesucker rods for purposes of inspecting, cleaning or repair, and it is anobject of our invention to provide means for unseating the working valveduring the pulling operation so that the oil carried in the pump tubingcan readily drain therethrough, thus obviating what is known in the oilfields as a wet job. It is highly desirable to provide in such a pumpmeans by which the standing valve can be removed, if desired, with theplunger for purposes of inspection or repair.

It is a still further object of our invention' to provide means on theplunger by which the standing valve cage can be readily picked up by theplunger and withdrawnv from the -well.

It is a further object of our invention to provide means on the standingvalve cage for unseating the working valve whenever the plunger engagesthe standing valve cage.

Further objects and advantages will be made evident. hereinafter.

Referring to the drawings which are for illustrative purposes only:

Fig. 1 is a view partly in section of the lower portion of the barrel ofan oil well pump embodying our invention, together with the standingvalve cage and co-operative parts, the plunger being shown at the lowerend of its working stroke.

Fig. 2 is a view partly in section showing the position assumed by theplunger and the standing valve cage when the standing valve cage isbeing removed from the well.

Serial No. 657,170.

Fig. 3 is a plan view of the lower end of the plunger as seen frombelow.

Fig. 4 is-a section on a plane represented by the line 44 of Fig. 1.

Fig. 5 is a perspective view of the lower end of the plunger.

Fig. 6 is a perspective view of the standing valve seat.

Fig. 7 is a perspective view showing the standing valve seat engaged andcarried by the plunger.

In the form of the invention illustrated, weprovide a barrel 20 whichcan be conveniently formed of an outer shell 21, a series of liners 22,a bottom casting 23, and a top casting 24. The shell 21 is continuousand is threaded in the castings 23 and 24, the liners 22 being groundaccurately to fit inside the shell, being clamped in place between themembers 23 and 24. Sliding in the bore of the liners 22 is a plunger25,into which a working valve seat. 26 is screwed. A pick-up member 27 isthreaded on the lower end of the member 26 and has the form shown inFig. 5. The member 27 is provided with a central slot 28 extendingupwardly therein, and with hooks 29 on either side thereof.

Seated in a conical opening in the casting 23 is a standing valve cage30, in which is a ball valve 31 normally closing an opening 32 whichextends through the cage 30. EX-

tending upwardly from the top of the cage 30 are'two arms 33 which areconnected by a cross-bar 34. Extending upwardly from the cross-bar34 inthe center of the barrel 20 is a stem 35.

Seated on and adapted to close an opening 37 extending through themember 26 is a working valve 36.

The method of operation ofour invention is as follows:

The parts being in the position shown in Fig. 1, the plunger 25 israised by means of the sucker rods 50, and oil is drawn upwardly throughthe opening 32 into the space above the standing valve 31 and below theworking valve 36. On the down stroke the working valve 36 is raised fromits seat by oil flowing through the opening 37 and the oil enters theinterior of the plunger 25 and flows upwardly through the pump tubing tothe top of the well.

To allow the standing valve to be removed with the plunger, we providethe structure illustrated in Figs. 1 to 7 inclusive. When it is desiredto pull the standing valve cage- 30, the plunger is allowed to movedownwardly from the position shown in Fig. 1 until the bottom of theplunger rests upon the top of the standing valve cage.

Referring to Figs. and 6, it will be noted that it is necessary to turnthe plunger through an angle of 90 degrees in either direction from theposition shown in Fig. to enable the cross-bar 34 to enter the slot 28.Vith the plunger so turned, the crossbar 3% can enter the slot 28 andwhen so entered, the cross-bar can be readily caught by the hooks 29 byturning the plunger 25 in a right hand direction. It the plunger 25 isthen raised, the parts assume the position shown in Fig. 7 and Fig. 2,and the standing valve cage 30 may be readily withdrawn from the wellwith the plunger. VVit-h the partsin the position shown in Fig. 2 andFig. 7, it will be noted that the stem projects up and lifts the valve36 from its seat. This allows the oil to drain downwardly through theopening in the member 26 and to escape as the pump rods are pulled fromthe well.

We claim as our invention:

1. In an oil well pump, the combination of: a barrel; a standing valvesupporting member arranged at the lower end of said barrel; a standinvalve cage supported in said supporting member, said standing valve cagehaving a horizontal bar extending through the axis of said pump; ahollow plunger in said barrel a valve member comprising a seat and aball, situated at the lower extremity'o'f said barrel; a tubular littingmember extending downwardly from said'plunger having hooks diametrallydisposed'a nd arranged to definca central slot of greater width thansaid bar of said standing valve cage, and said hooks being of such shapeas to engage and support said bar 'when the plunger is rotated with saidbar in place in said slot; and an axially disposed pin extendingupwardly from said horizontal bar and of such length as to displace saidball of said working valve when said hooks are in engagement with saidbar.

2. In an oil well pump, the con'ibination of: a barrel; a standing valvesupporting member arranged at the lower end of said barrel a standimvalve ca e su) )orted in said supporting member, said standing valvecage having a horizontal bar extending through the axis of said pump; ahollow plunger in said barrel; a valve member comprising a seat andaball, threaded into the lower end of said barrel; a tubular liftingmember extending downwardly from, and in threaded engagement with saidvalve member, having hooks diametrally dis posed and arranged todefine-Va central slot of greater width than said bar of said standingvalve cage, and said hooks being of such shape as to engage and supportsaid bar when the plunger is rotated with said bar in place in saidslot; and an axially disposed pin exj tending upwardly from saidhorizontal bar and of such length as to displace said ball of saidworking valve when said hooks are in engagement with said bar.

3. In an oil well pump, the combination of: a" plunger; a cylindricalworking valve seat threaded to the lower end of the plunger; a valve onthe seat; a cylindrical hook member threaded to the lower end of theworking valve seat, said member being of the same diameter as theplunger and being provided with hooks; and a standing valve cageprovided wit-h a cross bar which serves to retain a valve in the cageand which is adapted to be engaged by the hooks when the plunger islowered and partly turned.

4. In oil well pump,the combination of: a plunger; a cylindrical workingvalve seat threaded to the lower end of the plunger; a valve on theseat; a cylindrical hook member threaded to the lower end of the workingvalve seat, said member being of the same diameter as the plunger andbeing provided withhooks; a standing valve cage provided with across'barwhich serves to retain a valve in the cage and which is adapted to be engaged by the hooks when the plunger is lowered and partlyturned; and a rod extending from the cross bar axially of the plungerfor the purpose of unseating the working valve when the plunger islowered for the hooks to engage the. cross bar.

In testimony whereof. we have hereunto set our hands at Los Angeles.California. this 7th day of August, 1923.

JULE o. iixiits'oa. WILHELM JAR-DH.

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